I'm working on a script right about Civil War re-enactors who go back in time to the actual Civil War. It's kind of a big, crazy Back to the Future comedy. So, of course, it's the Civil War - I play the banjo. I was just having a conversation with one of the producers about some of the material and he was like, 'You know, we have to work in a scene where you play the banjo. And I was like I'll get behind that.

I told personal stories the way [Bill] Cosby would spin a yarn for ten minutes. I think in hindsight it works better as a long story than as a condensed monologue.

Todd [Phillips] doesn't care. That's part of his genius as a director, he will say anything to anybody.

One of the biggest breaks we had actually, one of the biggest, the hardest I laughed on the movie [The Hangover] was the baby was just doing ridiculous things and making hilarious faces. But I'm sitting there and I'm supposed to be having this exchange with Zach [ Galifianakis] and the baby is like staring at me with these huge eyes and acting, and just making the most cerebral faces, and I could not keep it together.

The improv stuff, that's always surprising so a lot of times that's really funny.

I happen to think singing is hilarious, especially when it pops out at the wrong time.

Improvisation is about finding the best joke or the silliest way to get something across. Improvising conflict is always fun because you can just go for it.